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Phytogeographical Affinities of Tree Species of Similipal Biosphere Reserve, Odisha, India Manas R. MOHANTA, Anil K. BISWAL, Su

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Phytogeographical Affinities of Tree Species of Similipal Biosphere Reserve, Odisha, India Manas R. MOHANTA, Anil K. BISWAL, Su Available online: www.notulaebiologicae.ro Print ISSN 2067-3205; Electronic 2067-3264 AcademicPres Not Sci Biol, 2018, 10(3):354-362. DOI: 10.15835/nsb10310216 Notulae Scientia Biologicae Original Article Phytogeographical Affinities of Tree Species of Similipal Biosphere Reserve, Odisha, India Manas R. MOHANTA, Anil K. BISWAL, Sudam C. SAHU* North Orissa University, Department of Botany, Baripada 757003 , India ; [email protected] (*corresponding author) Abstract The phytogeography of Similipal Biosphere Reserve (SBR), Odisha, India, reveals very interesting information on distribution of tree species. Phytogeographical affinities of tree species of SBR has been analysed by obtaining the information about the species distribution at local and global scale. A total of 240 tree species were recorded and their phytogeographical affinities were compiled with different countries of the globe. An analysis of the affinities revealed that SBR has strong affinity with Sri-Lanka (46.66%) and Myanmar (45.83%) followed by China, Malaysia, Thailand, Australia and Africa. SBR has also affinity with Himalayan vegetation possessing several trees and orchids find distribution in both the areas. The phytogeographical affinity of SBR supports the migration, establishment and naturalization of flora from/to SBR. This hypothesis needs further study for biogeographical mapping of Indian sub-continent. Keywords: Biogeographical mapping; conservation of species; distribution of trees; ecological implications; Indian sub- continent Abbreviations: SBR - Similipal Biosphere Reserve Introduction parts of the world. The fl oristic elements of India share the predominant affinities with the Indo -Malayan elements. It In recent time, remarkable changes have been observed has also affinities with Afro-Tropical and Tropical- Asian in the environment due to both man-made and natural elements (Daniel and Nair, 1986). Many workers have contributed moderately on phytogeographical study of factors resulting destruction and degradation of natural habitats. Biodiversity loss is a global phenomenon but its Indian sub-continent. Rana et al . (2001) studied the impact is greatest in the tropics , where the majority of phytogeographical affinity of Tons valley, Uttaranchal; species are distributed (Collen et al ., 2008). Tropical forests Suresh and Sukumar (1999) on Nilgiri Biosphere Reserve harbour ca 50% of total species in the world occupying only and Pragason (2014) on Eastern Ghats, Sukumar et al . 7% land area which is getting disappeared at a rate of 0.8 to (1992) on Mudumalai reserve forest; Saravanan et al . 2% per year (Sagar et al ., 2003). The phytogeo graphical (2013) on Andaman etc. Globally, studies on studies are the useful tools for assessment of the phytogeography of several regions are available such as geographical distribution, origin and ecological implications Neotropics (Gentry, 1982), Friulian plain, NE Italy (Nimis of plants of an area (Lausi and Nimis, 1985). and Fonda, 1997), Maxico (Rzedowski,1975)Western India is a mega biodiversity country where the floral Europe and Eastern Greenland (Hu bbard and Boulter, distribution and diversity is hi ghly influenced by its varied 2000), Tasmanian alpine flora (Kirkpatrick, 1982), Sonoran climatic, topographic and edaphic conditions. Starting from and Chihuahuan deserts (Krings, 2000), Yukon territory, the north Himalayas to the south Nilgiri hills and Western NW Canada (Lausi and Nimis, 1985),Yucatan Peninsula Ghats a wide range of diversity in flora and their habitat is (Manrique et al ., 2003), arid mountain of Oman observed. According to great British botanist Sir JD Hooker (Ghazanfar, 1991) and C oastal vegetation of Yucatan (1904), “the Indian flora is more varied than any of the Peninsula (Espejel, 1987). country of equal area in the eastern hemisphere, if not in the Phytogeographical study is useful in many aspects like globe”. Similarly the state of Odisha in Eastern India is rich conservation of species, sustainable utilization resources, in diversity and inhabited mixture of north and south study of migration of species and speciation, study on Indi an flora. JS Gamble (1892) was to comment that Orissa phenology and adaptation etc. Based on the is the meeting ground for the Himalayan and the South phytogeographical data several postulations have been given Indian Elements of the Indian flora. The available literature regarding migration of flora in Indian subcontinent. also shows significant affinity of Indian floral with other Takhtajan, (1969) postulated that the angiosperms spread Received: 02 Dec 2017. Received in revised form: 26 Aug 2018. Accepted: 23 Aug 2018. Published online: 27 Sep 2018. Mohanta MR et al / Not Sci Biol, 2018, 10(3):354-362 355 from low to high altitudes and not in the opposite direction Extensive field studies were conducted during different and Razi, (1 955) felt that the vegetation existed in South seasons of the year in order to access floristic composition of India comprising Eastern Ghats much before the advent of the study area (Fig. 1). Collection of plant samples along Himalayas and Similipal was part of Gondwana land mass with their photographs were made for future references. in the Paleozoic era. Being the meeting point of the Col lected plant specimens were identified referring regional northern and southern flora, it is clear tha t SBR has major floras. All the identified plants were processed and deposited role in the migration of flora within Indian subcontinent. at Herbarium of Department of Botany, North Orissa Some bio geographers consider Similipal Hill ranges as part University. A list of tree species had been made and of Eastern Ghats of India and some other put the region categorised into various phytog eographical groups under Chotanagpur plateau. However, SBR in Odisha is according to their world distribution (Table 1). The very rich in floral diversity and a grand repository of many countries considered for the phytogeographical study were rare, endemic and threatened species. But, a comprehensive Sri-Lanka, Myanmar, China, Thailand, Malaysia, Australia account of phytogeographical affinity of taxa is lacking. The and Africa. The phytogeographical affinity was obtained present study focuses on phytogeographical affinity of tree from in consu ltation with floras like flora of Madhya species of SBR and its significance. Pradesh (Verma et al ., 1993), flora of Odisha (Saxena and et al Materials and Methods Brahmam, 1994-1996) and flora of Bihar (Singh ., 2001 ), floral diversity of Similipal Biosphere Reserve, Vol-1 Study area (Biswal et al ., 2011) and trees of Simil ipal Biosphere Reserve Similipal Biosphere Reserve (SBR) in Odisha is very rich (Nayak et al ., 2014). in floral diversity and a grand repository of many rare, Results and Discussion endemic and threatened species. It is situated between 21° 28' to 22° 08' N latitude and 86° 03' to 86° 37' E longitude. The affinity of tree flora of SBR with other SBR exhibits a great degree of topographic variation and subcontinents is very extensive. The result shows highest thus provides adobe for rich biodiversity (Mishra, 2010). similarity of tree species with Sri- Lanka and least with Saxena and Brahmam (1989) categorised SBR into 6 major Africa (Fig. 2) . The affinity of SBR with Sri- Lanka is found forest types are Northern tropical moist deciduous forests, to be 46.66%, Myanmar 45.83%, China 25.00%, Thailand Northern tropical semi-evergreen forests, Dry deciduous hill and Malaysia 12.5% each, Australia 7.5% and Africa 4.58%. forest, Dry sal forests, High level Sal forests and Grasslands. All the members of Ebenaceae found in SBR are distributed There are 1076 plants recorded from the area including 60 in Sri- Lanka and some of the members of Moraceae ar e very species of ferns, 92 species of orchids and two gymnosperms similar to Sri- Lanka. Albizia chinensis , Albizia odoratissima , (Saxena and Bra hmam, 1989; Misra, 2004).The climate is Carallia branchiate , Cipadessa baccifera etc. are the plants warm and humid with an average rainfall of 173 cm . (maximum 225 cm and minimum 110 cm) and maximum with highest range of distributions among countries Indo- temperature during hot weather rise up to 43 degree Celsius African and Indo-Australlian affinity found to be very negligible; only 11 and 17 species are found to be common while minimum during winter fall as low as 4 degree Celsiu s (Mishra, 2010). respectively. Fig. 1. Map of the study area Mohanta MR et al / Not Sci Biol, 2018, 10(3):354-362 356 Table 1. List of 240 tree species of SBR and their affinity Sl. No Plant Name Family A B C D E F G 1 Acacia farnesiana Leguminosae - - - - - - - 2 Acacia lenticularis Leguminosae - - - - - - - 3 Acacia nilotica Leguminosae - - - - - - - 4 Acronychia pedunculata Rutaceae + - + - + + - 5 Actinodaphne gullavara Lauraceae - - + - - - - 6 Aegle marmelos Rutaceae - - - - - - - 7 Alangium salvifolium Cornaceae + + - + - - + 8 Albizia procera Fabaceae + - + - + - - 9 Albizia chinensis Fabaceae + + + + + - - 10 Albizia lebbeck Fabaceae - - - - - - + 11 Albizia odoratissima Fabaceae + + + + + - - 12 Alchornea mollis Euphorbiaceae - - - - - - - 13 Alphonsea lutea Annonaceae + - - - - - - 14 Alphonsea ventricosa Annonaceae - - - - - - - 15 Alstonia scholaris Apocynaceae + + - - + - + 16 Annona reticulate Annonaceae - - - - - - - 17 Annona squamosa Annonaceae - - - - - - - 18 Anogeissus acuminate Combretaceae - - + - - - - 19 Anogeissus latifolia Combretaceae + - - - - - - 20 Antidesma acidum
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